A list of 204 species of the Miridae from Gilan and the adjacent prov- inces of Iran is provided. The following 58 species are new for Iran: Adelphocoris vandalicus (Rossi, 1790), Anapus freyi (Fieber, 1864), Atractotomus mali (Meyer- Dür, 1843), Blepharidopterus angulatus (Fallén, 1807), Brachycoleus caucasicus (Poppius, 1912), Camptotylus linae (Puton, 1881), Campylomma annulicorne (Signoret, 1865), Compsidolon (Apsinthophylus) absinthii (Scott, 1870), C. (A.) nanno Linnavuori, 1971, Deraeocoris (Deraeocoris) rutilus (Herrich-Schaeffer, 1839), D. (D.) trifasciatus (Linnaeus, 1767), Ectagela aspera Linnavuori, 1984, Ephippiocoris lunatus Poppius, 1912, Eumecotarsus milidius Seidenstücker, 1980, Europiella albipennis (Fallén, 1829), E. alpina (Reuter, 1875), E. artemisiae (Becker, 1864), E. nigrocunealis (V. G. Putshkov, 1975), Euryopicoris nitidus (Meyer-Dür, 1843), Excentricus planicornis (Herrich-Schaeffer, 1836), Globiceps (Globiceps) coryli V. G. Putshkov, 1970, G. (G.) sphaegiformis (Rossi, 1790), G. (Kelidocoris) fulvicollis Jakovlev, 1877, Halticus apterus apterus (Linnaeus, 1758), H. darbandikhanus Linnavuori, 1984, H. macrocephalus Fieber, 1858, Lepidargyrus putshkovi Drapolyuk, 1993, Leptopterna putshkovi Vinokurov, 1982, Macrotylus (Alloeonycha) horvathi (Reuter, 1876), M. (Macrotylus) talhou- ki Wagner, 1976, Megacoelum infusum (Herrich-Schaeffer, 1839), M. pistaciae V. G. Putshkov, 1976, Nanopsallus carduellus (Horváth, 1888), Oncotylus (On- cotylus) nigdensis Linnavuori, 1961, O. (O.) viridifl avus longipes Wagner, 1954, Orthocephalus fulvipes Reuter, 1904, O. parvulus Reuter, 1891, O. saltator (Hahn, 1835), O. vittipennis (Herrich-Schaeffer, 1835), Orthonotus kiritshenkoi Josifov, 1964, Orthops (Orthops) basalis (A. Costa, 1853), Orthotylus (Orthotylus) margi- nalis Reuter, 1883, O. (O.) nassatus (Fabricius, 1787), O. (O.) populi Drapolyuk, 1991, Phytocoris (Ktenocoris) ulmi (Linnaeus, 1758), Pilophorus cinnamopterus (Kirschbaum, 1856), P. perplexus (Douglas & Scott, 1875), Pinalitus cervinus (Herrich-Schaeffer, 1841), Plagiognathus (Plagiognathus) zuvandiensis V. G. Putshkov, 1978, P. (Zophocnemis) bicolor (Jakovlev, 1880), Psallus (Mesopsallus) ambiguus (Fallén, 1807), P. (Psallus) cruentatus (Mulsant & Rey, 1852), P. (P. ) gidajatovi Drapolyuk, 1987, P. (P. ) salicis (Kirschbaum, 1856), P. (P. ) varians va-